Send a fax to United States from your phone. Dial +1, format the number correctly, and transmit documents securely with Send Fax Pro.
Open Send Fax Pro, enter the recipient's fax number using the +1 country code (e.g. +1 (212) 555-0199), attach your document, and tap Send.
The country code for United States is +1. US fax numbers use the +1 country code followed by a 3-digit area code and 7-digit number.